John

I'm using the G3 BG2 Fixpack Beta 4 plus other mods. I installed both Improved Crypt King and Improved Undead components of Tactics.

AFAIR, up until I started the Unseeing Eye quest, undead would cast spells as well as attacking. That seemed to change when I looked up Keldorn in the sewers. Then they just attacked and did not cast spells.

In the Improved Crypt King, I don't know if it is intentional or not, but skelly warriors continued spawning after I killed the Crypt King. I was using hit and run tactics on the warriors and ducking out trying to entice a skelly warrior to follow me outside where I could take advantage of speed, etc. I had already killed C.K. but not before he was able to get three warriors to appear. I also noticed that the other undead in the tombs on the surface of the graveyard did not cast any spells either.